I agree with the posts from Nick Bullseye, yung havok and jaybee111. I was in Bangkok during the red shirts riots a few years ago. The key is to be alert, stay away from crowds, avoid the usual tourist popular spots, large malls etc.
It will likely be more safe to be visiting Thailand as you have planned as security will be at its maximum. Red light districts are not usual targets, as the crowds are not big enough in the eyes of these evil doers.
for those in the know, the red shirt yellow shirt drinking card game soop sip fest was just that, u just mind your own and do what you do and its typical thai sabi sabi'ness and not much else.
I wouldn't be staying in bkk, id be landing, enjoying the noise, stank filthy air and very charming people for such a big city and heading south like I always did.
in reality with so many church shooting, park shootings, this that n the other which seem to be happening weekly I guess unfortuenly bkk got its turn.
I mean it wasn't some mohamedian it was some dude who's pick is already online.
this medium season is def gonna very quiet and peacefull should no more bombs go off.